body {
    font-size: 13px;
    line-height: 20px;
    font-family: "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

pre, code {
    font-size: 10px;
}

h1 {
    margin: 20px 0;
    font-size: 28px;
}

h2 {
    margin: 20px 0;
    font-size: 24px;
}

h3 {
    margin: 20px 0;
    font-size: 20px;
}

h4 {
    margin: 20px 0;
    font-size: 16px;
}

.dropdown-menu {
    max-height: 400px;
    overflow: hidden;
    overflow-y: auto;
}

blockquote p {
    font-size: 13px;
}